[PATCH/RFC] powerpc/mm: Cleanup handling of execute permission

[Josh Boyer]

On Fri, Aug 14, 2009 at 05:39:42PM -0500, Becky Bruce wrote:
> Ben,
>
> This breaks the boot on 8572.  I don't know why yet (and I'm probably  
> not going to figure it out before I go home, because, frankly, it's late 
> on a Friday afternoon and I need a glass of wine or, perhaps, a beer).
>
> Kumar and I will poke into this more and let you know what we find out - 
> in the meantime, if you have any brilliant flashes, pony up!

I tested this on a 440EPx NFS rootfs boot too.  It doesn't cause init itself
to crap out with a SIGILL like Becky's board, but it does do weird things
and cause a SIGILL elsewhere during my boot.

Reverting this patch from your testing branch allows things to work just fine.

josh